volume.py

import cv2
import time
import numpy as np
import PythonProjects.HandTrackingModule as htm
import math
from ctypes import cast, POINTER
from comtypes import CLSCTX_ALL
from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume

wCam, hCam = 640, 480


cap = cv2.VideoCapture(0)
cap.set(3, wCam)
cap.set(4, hCam)
pTime = 0

detector = htm.handDetector(detectionCon=0.7)


devices = AudioUtilities.GetSpeakers()
interface = devices.Activate(
    IAudioEndpointVolume._iid_, CLSCTX_ALL, None)
volume = cast(interface, POINTER(IAudioEndpointVolume))
#volume.GetMute()
#volume.GetMasterVolumeLevel()
volRange = (volume.GetVolumeRange())
volume.SetMasterVolumeLevel(0, None)
minVol = volRange[0]
maxVol = volRange[1]
vol = 0
volBar = 400
volPer = 0


while True:
    success, img = cap.read()
    img = detector.findHands(img)
    lmlist = detector.findPosition(img, draw=False)
    if len(lmlist) != 0:
        #print(lmlist[4] , lmlist[8])

        x1 , y1 = lmlist[4][1],lmlist[4][2]
        x2 , y2 = lmlist[8][1], lmlist[8][2]
        cx , cy = (x1 + x2) // 2 , (y1 + y2) // 2

        cv2.circle(img , (x1 , y1), 13, (255, 0 , 255), cv2.FILLED)
        cv2.circle(img, (x2 , y2), 13, (255, 0, 255), cv2.FILLED)
        cv2.line(img , (x1 , y1) , (x2 , y2) , (255 , 0 , 255) , 3)
        cv2.circle(img, (cx, cy), 13, (255, 0, 255), cv2.FILLED)


        lenght = math.hypot(x2 - x1, y2 - y1)
        #print(lenght)

        vol = np.interp(lenght,[30 , 250], [minVol , maxVol])
        volBar = np.interp(lenght, [30, 250], [400, 150])
        volPer = np.interp(lenght, [30, 250], [0, 100])
        print(int(lenght) , vol)
        volume.SetMasterVolumeLevel(vol, None)

        if lenght < 30:
            cv2.circle(img, (cx, cy), 13, (0, 225, 0), cv2.FILLED)

    cv2.rectangle(img , (50 , 150 ), (85 , 400 ), (0, 255, 0), 3)
    cv2.rectangle(img, (50, int(volBar)), (85, 400), (0, 255, 0), cv2.FILLED)
    cv2.putText(img, f'{int(volPer)} %', (40, 450), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)

    cTime = time.time()
    fps = 1 / (cTime - pTime)
    pTime = cTime

    cv2.putText(img, f'FPS: {int(fps)}', (40, 50), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)

    cv2.imshow("Img", img)
    cv2.waitKey(1)